CVE-2026-83300 in XML Gateway
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle XML Gateway product of Oracle E-Business Suite (component: Install). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle XML Gateway. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle XML Gateway accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle XML Gateway. CVSS 3.1 Base Score 7.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Oracle XML Gateway component of the Oracle E-Business Suite, specifically affecting installation procedures and configurations in versions ranging from 12.2.3 through 12.2.15. This security flaw is classified as an install-time or configuration-based weakness that persists into runtime operations due to insufficient access controls during the setup phase. The vulnerability allows for exploitation by a low-privileged attacker who possesses network connectivity via HTTP, indicating that no authentication beyond basic user privileges is required to initiate the attack vector. This characteristic aligns with CWE-284 Improper Access Control and suggests a failure in enforcing strict privilege separation between administrative functions and standard user operations within the XML Gateway subsystem.
The technical nature of this flaw enables an attacker to bypass intended security restrictions, leading to unauthorized access to critical data stored or processed by the Oracle XML Gateway system. Because the vulnerability is exploitable over HTTP without requiring complex interaction from a victim user interface, it falls under the category of network-based attacks that do not rely on social engineering tactics such as clickjacking or phishing. The absence of required user interaction simplifies automated exploitation scripts and increases the likelihood of successful compromise in environments where low-privileged accounts have legitimate but limited access to web-facing services associated with enterprise resource planning systems.
The operational impact of this vulnerability is significant, encompassing both confidentiality and availability dimensions as reflected by its CVSS 3.1 base score of 7.1. On the confidentiality side, successful exploitation grants attackers complete or near-complete access to all data accessible through Oracle XML Gateway, potentially exposing sensitive financial records, customer information, and proprietary business logic embedded in electronic document exchanges. Regarding availability, the vulnerability allows for partial denial-of-service conditions, which can disrupt critical supply chain communications and order processing workflows that rely on real-time XML message exchange capabilities inherent to this component.
From a threat modeling perspective, this vulnerability maps directly to MITRE ATT&CK techniques involving unauthorized access and potential disruption of services. Attackers leveraging this flaw could engage in data exfiltration or use the compromised system as a pivot point for further lateral movement within the enterprise network. The low complexity and high availability impact underscore the urgency of addressing this issue, particularly given that XML Gateway often serves as a critical integration layer between disparate business applications where security lapses can have cascading effects across multiple systems.
Mitigation strategies must prioritize immediate patching to the latest supported version of Oracle E-Business Suite that includes fixes for this specific vulnerability in the Install component. Organizations should also implement strict network segmentation to limit HTTP access to XML Gateway interfaces, ensuring that only authorized administrative subnets or trusted application servers can communicate with these endpoints. Additionally, enforcing multi-factor authentication and role-based access controls even for low-privileged accounts can reduce the attack surface by raising the barrier for exploitation. Regular auditing of installation configurations is recommended to ensure that default permissions are not overly permissive, thereby aligning operational practices with industry standards such as CIS Benchmarks for Oracle databases and middleware components.